Machine for assembling strip sections and box-blanks



.H. J. GOSS May 9, 1933.

MACHINE FOR ASSEMBLING STRIP SECTI ONS AND BOX BLANKS Filed Jan. 22.1931 6 Sheets-Sheet 1 1 7411671505" 1 Ha 7 0 ZJJ floss H. J. GOSSMACHINE FOR ASSEMBLING STRIP SECTIONS AND BOX BLANKS Filed Jan. 22, 1931NM n HQ? &/ L .vw MU I I I I l I l I I i. O MN f la h NwN. 1 4 H IQMM 1a y 9, 1933- H. J. eoss 1,908,291

MACHINE FOR ASSEMBLING STRIP SECTIONS AND BOX BLANKS Filed Jan. 22, 19316 Sheets-Sheet 5 Harold J 5055 H. J. GOSS May 9, 1933.

MACHINE FOR ASSEIVIBLIJIG STRIP SECTIONS AND BOX BLANKS Filed Jan. 22,1951 6 Sheets-Sheet 4 5 w w m ,[72 we 22%; HaroidJT 60,529

ah'zaz zig May 9, 1933. H1 6055- 1,908,291

MACHINE FOR ASSEMBLING STRIP SECTIONS AND BOX BLANKS Filed Jan. 2, 19316 Sheets-Sheet 5 IIIIIEI IH .2 us via a Ha roidJ. G05

MACHINE FOR ASSEMBLING STRIP SECTIONS AND BOX BLANKS May 9, 1933.

Filed Jan. 22, 1951 6 Sheets-Sheet 6 Jwvenfor Haroid J. 605,5

fltiaz'izgy Patented May 9, 19 33 UNITED STATES PATENT OFFICE HAROLD J.GOSS, OF NASHUA, NEW HAMPSHIRE, ASSIGNOR TO THE INTERNATIONAL claimed.

PAPER BOX MACHINE COMPANY, OF NASHUA, NEW HAMPSHIRE, A CORPORATION OFMAINE MACHINE FOR- ASSEMBLING STRIP SECTIONS AND BOX-BLANKS Applicationfiled January 22, 1931.

This invention relates to box-making machinery, and has particularreference to the production of box-blanks having transparent portions,which blanks are adapted to be then converted into receptacles, thecontents of which may be seen through so-called windows.

Several attempts have been made to produce such blanks, one being bymeans of a machine which draws a strip of transparent material from asupply roll and applies it to the blanks and effects severance of thestrip in such manner that each section applied to a blank is of a lengthpractically equal to that of the blank and greatly exceeding the area ofthe aperture in the blank that is to be covered, the excessive materialbeing, therefore, equivalent to so much waste.

The principal object of my invention is to provide a machine of highspeed and continuous in operation, which severs a strip of transparentmaterial into sections of no greater area than required to slightlyoverlap the margins of apertures in box blanks, and automatically aifixsuch sections to the blanks in correct locations while the latter aretraveling.

Another object is to provide a machine of the type just referred to andin which the operations of the various parts thereof are controlled bythe correct supply of blanks to be operated upon.

Another object is to provide a machine of the type referred to, which iscapable of operating on blanks of widely different sizes and shapes bothas to the blanks themselves and the apertures therein.

With said objects in view, and others hereinafter explained, theinvention consists in the construction and combination of partssubstantially as hereinafter described and Of the accompanying drawingsFigure 1 is a side elevation of the machine.

Figure 2 is a detail view looking from the other side of the machine.

Figure 3 represents a longitudinal section of the machine.

Serial No. 510,398.

Figure 5 represents a section on line 5-5 of Figure 3.

Figure 6 represents a'section on line 6-6 of Figure 3.

Figure '4 represents a section on line'77 of Figure 3.

Figure 8 represents a section on line 88 of Figure 3.

Figure 9 represents a section on line 99 of Figure 8. I

Figure 10 represents a section on line 1010 of Figure 4.

Figure 11 is a detail perspective ofthe glue-applying segment. I

Figure 12 is a detail elevation of a part of the mechanism shown inFigure 1.

Figure 13 represents a section on line 13-13 of Figure 1.

- Figure 14 is a top plan. view of the parts shown in Figure 13.

Figure 15 represents a section on line 1515 of Figure 7.

Figure 16 represents a section on a line connecting the numerals 1616 ofFigure 9, said line being omitted to avoid confusion.

Figure 17 represents a section on line 1717 of Figure 16-. k

Figure 18 is a diagram illustrating the switches and electricalconnections.

Figure 19 is a perspective view illustrating a travelling blank which isto have a section of cellophane applied to it.

Figure 20 is a perspective view of a completed piece of work.

Similar. reference characters designate similar parts or features in allof the views.

Referring first to Figures 1 and 3, the frame of the machine as a wholeis illustrated at 21, said frame at one end having a table 22 for a pileof blanks a, said blanks being taken from the table singly andsuccessively by a feed roll 23 having friction plugs 24. The usual brushfor this well-known type of feeder is illustrated at 25. 4

Each fed blank is deposited on a air of chains 26 having, at properlyspace intervals, pins 27 to engage the rear edges of the the machinewithout stopping at any point.

.At the blank-receiving end, said chains are supported by pulleys 28'carried by shaft 29, and at the other end are engaged by sprockets 30 ofa driven shaft 3 1. The chains also en-' gage suitably mountedidlesprockets 32. The intermediate portions of the upper stretches of thechains travel along guide bars as is customary in box machines employingblankcarrying chains. Also as is customary in such machines, the chainsand all parts immediate ly associated therewith are adjustable toprovide for operating on blanks of diflerent sizes or shapes. One of theusual right and left hand threaded screws for effecting the lateral adjustment is indicated by dotted lines in Figure 4.

for aflixing sections of a strip of cellophane to apertured box blanks,it might be employed for other material than cellophane. Therefore, saidmaterial will hereinafter be chiefly" referred to as a strip, andsections thereof. Said strip is indicated at b, and it is drawn from asupply reel 33. It is treated and cut into sections, and the latteraflixed to the blanks a, by mechanisms to be described here- I inafter,and the assembled blanks and sections (Figure 20 pass between squeeze orpressure rolls 34 igures 3 and 4) onto a suitable stacker belt 35.

The adhesive employed, hereinafter re-,

ferred to by the term glue, is applied to each passing blank by a rotarysegment 36 (Figures 1 and 11 having an applier 37 the shape and size ofw ich corresponds with a narrow area surrounding the margins of theapertures in the blanks (Figures 19 and 20) which are to be operated onby the machine. Said applier 37 takes glue from a roll 38 rotating in aglue tank 39. The segment 36 which has the applier 37 is keyed on ashaft 40, and is removably mounted thereon so that a segment having anapplier of another shape or size may be substituted therefor whendifferently apertured blanks are to be operated upon by the machine.

The frame of the glue tank 39 at one is supported by a tie rod 41, andother portions are supported by the shaft 46. A suitable screw engagesa' suitable portion projecting from the sleeve of the segment 36 toenable said segment to be adjusted along its shaft 40.

The blanks carried by the chains .pass under a plate 43 while the strip6 is travelling in a path above the plate, said strip leading down fromthe reel and passing under a guide roll 44 and being drawn along by feedrolls 45 and fed through a slot in a rock shaft 46 to'position to be cutby a rocking knife 47 actuated as presently described. Said knife whichis serrated as shown in Figure 16,'is clamped between strips 48 ofyieldable material such as soft rubber the purpose of which will bepresently explained. Said knife and strips are carried by two arms 49(Fig. 9) of the rock shaft 46. A recess 5O in Although the machine isdesigned specially a cross bar 51, which connects arms 54 of two blocks52 (Figs. 16 and 17) receives the lower edge of the knife when thelatter descends. Each time that the knife descends, the elastic strips48 coact with the upper surface of the anvil bar 51 in gripping thestrip 6 to hold it not only during the cutting operation of the knifebut' also to hold it by its rear end temporarily during the operation ofthe roll 113 hereinafter described.-

The blocks 52 are mounted on two screw rods 55 (Figs. 9 and 16) one ofwhich has a crank 56, and each rod has a sprocket 57 (Fig. 8) the twosprockets being connected by a chain 58, whereby actuation of the crankmay efiect any desired adjustment of the blocks 52 and the various partssupported thereby, including the knife and anvil bar,

in a direction longitudinally of the machine.

To rock the shaft 46 and its arms which carry the knife, one end of theshaft has an arm 53 (Figs. 9 and 1.6) connected by an ad-' justablecoupling 59 with a screw-threaded pitman 60, actuated as hereinafterdescribed. A shaft 61 (Figs. 1, 3, and 9) is mounted 1n bearings in theframe of the machine, and

through said brackets, and said brackets sunport the plate 43 and theguide roll 44. A screw 67 enters one of the brackets. An endless chain68.indicated by -dottedlines in Figure 1 engages sprockets carried bythe two I screws 64, 67, whereby a suitable crank connected to eitherone of them may be actuated to effect lateral adjustment of the wholeunit -of the parts of the machine which supply and feed the strip ofcellophane to suit the requirements of different kinds or sizes ofblanks.

Mounted in the upper ends of the brackets 66 (Figs. 3 and 6) is a fixedrod 69'to which are fixedtwo upright arms 70 which support a rod 71 onwhich the reel 33 is rbtatably mounted, usually with friction means-toprevent unduly-freerotation.

The two strip-feed rolls gether by suitable pinions as illustrated byFigure 7 and one of them has a sprocket connected by-a chain 72 with asprocket 73 car- 45 are geared to'-' ried by a shaft 74, the ends ofwhich are mounted in bearings in the ends of two arms .7 5'pivotablysupported on a shaft 76 (Figs.

land 3). Said shaft 76 has a pinion 77 meshing with a gear 78 carried bya stud shaft 79. When the shaft 79 is actuated as presently descrlbed,power is transmitted to the shaft 76 and from it to the shaft 74 bymeans of a chain 80 mounted, on sprockets carried by the said twoshafts, and from the shaft 74 to the rolls by the chain 72. The reasonfor this structure is to provide for the transmission of power from theshaft 76 which is always in one position, to the feed rolls 45regardless of the adjusted position of said rolls longitudinally of themachine. When such adjustment is effected, the arms carrying theintermediate shaft 74 swing up or down. To maintain the proper distancebetween said shaft 74 and the sprocket of the feed rolls so as to keepthe chain 72 taut, a suitable spacing connection rod is employedalongside the chain 72 as illustrated at 7 2' in Fi re 7.

In order to drive t e feed rolls 45 intermittently and to differentdegrees of rotation according to the length of the sections which are tobe cut from the stri b, th emachine includes the following mec anism:

The gear 78 has a plurality of pawls 81 (Figs. 1 and 7) which aresuitably springpressed in engagement with the teeth of the ratchet 82mounted loosely on the stud shaft 79. Combined with said ratchet is asprocket 83 over which a chain 84 extends. A spring 85 connects one endof the chain with a suitable fixed point, and the other end of the chainengages a pin 86 which projects laterally from the end of an arm 87which is pivoted at 88 to the frame of the machine.

Acting like a cam on the upper surface'of the arm 87, is a roll 89(Figs. 1, 6, 13 and 14) which is carried by the shaft 90. 1T0, enablesaid roll to be adjusted relatively to the shaft, said shaft has acasting 91 secured to it, said casting having a recess in which isslidably mounted a block 92 which is internally threaded for the screw93, and which has a pin 94 on which the roll 89 is mounted. By means ofthe screw 93, the block and its pin 94 and the roll 89 may be adjustedrelatively to the axis of rotation of the shaft so that a greater orlesser degree of movement may be imparted to the arm 87 andconsequently, through the chain 84 and other parts described, a longeror shorter length of the strip 6 is fed by the rolls 45 to position tobe severed by the cutting member. In other words, the length of feed ofthe strip b, to vary the length of the sections cut therefrom, isaltered by varying the radial osition. of the roll 89. It is to beunderstoo however, that during the downward swing of the arm '87 thechain 84 is causing the ratchet 82 to ride idly past the pawls 81, saiddownward movement of the arm merely serving to determine the point atwhich the return or upward movement thereof is to begin. Said returnmovement, eflected by the spring 85, causes the teeth of the ratchet toact on the pawls 81 to effect rotation of the gear 78 and, through themechanism described, cause the rolls 45 to feed the strip. 7 Therefore,it will be understood that the actual feed of the strip is caused by thespring 85 and consequently stem '95 (Figs. 1, 6, and 12) having a catchshoulder 96 to engage the in 86, and an inclined' or bevelled surface 9above said shoulder. The magnetically controlled position or movement ofsaid catch'stem will be described presently.

At the other side of the machine from the Figure 1 view, the shaft 90has a cam 98 (Figs. 2 ,and 6) against which a roll 99 carried by an arm100 of the rocker shaft 65 bears, a suitable spring 101 being providedto cause the arm 100 toswing to the left (Fig. 2) when the recess inthe'cam 98 is opposite the roll 99.

A rocking catch arm 102 having a shouldered tip 103 vhas a spring 104connected to one end of it, the other end having a surface capable ofbeing attracted by an electromagnet 105 the clrcuit for which will bedescribed hereinafter A sliding pin 106 is mounted to present one end inthe path of the arm 100 in the osition illustrated by Figure 2, itsother en being connected to an arm a pivoted arm 112 which, as will bedescribed,

serves as an electrical switch to control the magnet 105, said switchbeing in the path of movement of blanks carried along bythe chains 26. i

The shaft 61 (Figs. 3, 8 and 9) carries a roll 113 a portion of which isenlarged to form a segment which coacts with a roll 114 below it totransfer each blank from the carrier chains, and each strip section thathas been applied thereto, over the aperture in the blank, to the rolls34. The shaft 115 of the roll 114 has a roll 116 at each end (Figs. 1and 8), said rolls being acted upon by cams 117 of the upper shaft 61.The shaft 115, with its rolls, is mounted in arms 118 of a rock shaft119 and normally held by a spring 120 against an adjustable stop 121.Projecting from one of the arms118 is a stud .122 to be engaged byacatch123pivotcd at 124. I An electro-magnet 125' the circuit for which107 which is mounted on one end of a small .tends partly under will bedescribed, controls the operation of the catch 123.

A block 126 (Figs. 8 and 9 is secured to the bottom of one of the bracets 62, and to said block a lever 127 is pivoted at 128. One end of thelever 127 has a somewhat elongated finger 129 the outer face of which 1scurved and over which a pin 130 of the segment roll 113 rides. A spring131 tends to hold the lever 127 in the position illustrated in Figure 9.From the other end of the. lever 127, a small rod 132 extends to aboutthe midlength of the segment roll 113 (Fig. 8) and at its end has aspring finger 133 which exthe segment roll and over the path of movementof the strip 1) when the latter is being advanced. The object of themechanism just described is to ensure proper delivery of the strip 6 toensure the following described operation.

It is to be understood that the gearing and other parts of the machineare properly timed to cause each feed of the strip to stop with its endin about the position illustrated by Figure 9, and to cause a blank toarrive under the strip and at the proper distance beyond it so that thestrip section which is then cut off will properly register 'with theaperture in the blank which, of course, has had glue w applied to itaround the margin of the aperture (Fig. 19). When the knife descends,the guide slot in the rock shaft 46 (Fig. 9) deflects the strip so thatit properly lies on the anvil bar 51, and at about the same time the pin130 of the segment feeder 113 engages the lever 127 and causes thespring finger 133 to lay the strip 6 smoothly onto the travelling blankand guide it so while the pin 130 is riding along the curved face 129 ofthe lever. Then by the cooperation of the surface of the segment'113with the roll 114 the blank and section are pressed together and thecompleted article (Fig. is delivered to the rolls 34. The timing is suchthat after each section of the strip has been cut off and applied asjust described the strip is again advanced to a'point with its front endslightly beyond the vertical plane of the axes of the segment and roll114, so that when another blank arrives to receive a section of thestrip, both will be grasped by the nip of the advancing edge of thesegment with the roll 114 below it and fed along.-

One end of the shaft has a cam 134 (Figs.

1 and 5) which acts on a roll 135 carried by one arm of an elbow lever136 the other arm 137 of which is notched, said lever having a spring138 connected to it. A pivoted catch 139 having a spring 140 connectedto it has a portion in position to be attracted by an electromagnet 141the circuit for which will be described.

The elbow lever 136 is rigidly connected to one end of a rock shaft 142(Figs. 3 and 5) which has two arms 143 which carry a rod 144. A clamp145 secured to the rod supports the stem 146 of a plate 147 Through themechanism described, the cam 134 acts to elevate the plate 147intermittently in such time that as each blank fed by the pins of the'chains approaches the plate,.the blank will be raised in time toreceive its glue m (Fig. 19) from the applier 37 (Fig. 11 If a fixedplatewere to be emplo ed in the location of the plate 147, it woul haveto be mounted close enough to the glue applier to ensure passage of eachblank quite close to said applier, and then if the machine were to skipablank, which is liable to happen, the plate would then be liable toaccumulate glue from the applier and such glue on the plate wouldinterfere with the travel of the next blank over it. To prevent any suchaccumulation on the vertically movable late, it is not permitted to riseunless a blank is arriving over it. The means for effecting this willnow be described.

A finger 148 (Figs. 3, 10 and 18) normally extends across the path ofmovement of the blanks, at a point between the feed roll 23 and theplate 147. Said finger is pivoted at 149 to a block 150 supported on atie rod 151. An. arm 152 of the pivoted finger serves, when a blankpasses the finger and lifts it, to act as a swltch arm to close anelectrical circuit at the terminals 153, for a purpose hereinafterdescribed.

Referring to Figures 1 and 18,.an angle ure 3 has a suitably supportedelectric heater 158 with guide rolls 159 for the strip. Such a heaterserves to ensure sufi'icient dryness of the strip to enable the gluethat is employed on the blank to effect firm adhesion of each stripsection to a blank. The heater also has the efi'ect of smoothing out thestrip if it leaves the supply roll in somewhat wrinkled condition.

In the following description of operation, an occasional reference toFigure 18, in connection with the other figures, will facilitate anunderstanding thereof. During the operation of the machine, each passingblank acts on 'the finger 148 to close a circuit from the source ofenergy at B through wiring 160, 173, 174, magnet 141 and Wiring 175,166. This results in the plate 147 being lifted as has been described.

When a blank acts on the switch 112, a circuit is completed from Bthrough wiring 160, 161, 167, 168, switch 157, and divides so as to passnot only through the wire 169 and magnet 125 and the wirmg 170, 166, butalso through the wirin 171, magnet 105, and the wiring 172, 166. achrotation of the shaft 61 and its stri -feeding segment 113 causes thepin 130 (Fig. 9) to lift the end 129 of the lever 127 and lower the rod132 and it finger 133 so that if no strip is in place a circuit willthen be closed from B through the wiring, 160, 161, 162, magnet 156,wiring 163, 164, plate 43, finger 133 and wiring 165, 166, so that ifthe switch 112 is closed by the passage of a blank, the magnets 125, 105will not be energized. This prevents the roll 114 and the under roll 34from risin g and, therefore, a passing blank carrying glue will nottransfer any glue to the upper rolls. It also results in no cutting orfeeding action being imparted to the strip 6. Of course, in someinstances, some of the wiring illustrated can be dispensed with byemploying suitable grounding.

The relative timing of operation'of the dif-' ferent-parts of themachine is such that as each blank, carrying glue applied by the segment36, approaches the combining rolls 113, 114, the said blank acts on theswitch 112 and effects the closing of a circuit which rolls, the rockerarms 49 descend and the I as starts the strip-feeding rolls 45 inoperation tofeed the desired length of the strip, the

rolls then stopping and holding the. strip. Then, as the blank nears thesaid combining strip is clamped by the strips 48 gripping it against theanvil block 51 so that the portion of the strip which is between the nowstationary rolls 45 and the strips 48 is held taut or under tensionduring the action of the serrated knife 47. As material such as cellohane is very thin, a straight-edged knife is lia le to shift thematerial laterally. during a cutting operation, whether the saidoperation is a shearing one or a cho ping one,

especially when the material is wi e. Therefore I employ the knife 47having an irregular or serrated edge which effects severance...

of the strip while the latter is held taut, without causing any suchshifting of the cut section as would interfere with .its accurateregistration with, the blank when the latter and the cut section of thestrip are, combirred by the rolls 113, 114.

Figure 17 shows clamping strips 48 at both sides of the knife, but thestrip 48 that is nearest to the pivot of the arms 49 and'is thereforebehind the knife, is the one that mainly'coacts with the rolls 45 inholding the strip taut during the final downward movement of the rockerarms 49 and the cutting actionof the. knife. In other words, the

knife is intermediate the rolls 45 and one of.

being held from slipping.

Having now described my invention, I claim 1. In a machine having meansfor causing blanks to travel and means for successivel severing sectionsof pre-determined lengt from a strip, means controlled by the pres-,.

if no blank arrives in position to receive a section of the strip.

3. A machine for applying transparent material to receptacle blankshaving apertures, said machine having means for causing individualapertured blanks to travel, means for applying adhesive to the blanksaround the apertures thereof, means for completely cutting sections froma strip of transparent material and aflixing said sectionsto the blankswith the margins of said sections overlying the adhesive on the blanks,and electrically controlled mechanism for preventing feed of the stripif no blank arrives in position to receive a section of the strip.

' 4. A machine for applying transparent material to receptacle blankshaving apertures, said machines having means for causing individualapertured blanks to travel, means for successively and completely cutting a strip of transparent material into sections havin an area butslightly exceeding thearea of t e apertures in the blanks, means forafiixing said sections to the blanks over the apertures thereof andelectrically controlled mechanism for preventing feed of the strip if noblank arrives in position to receive a section of the strip.

5. A machine for affixing sections of a strip of-transparent material toportions of blanks, said machine having a cutterfor the strip, andyieldable means for feeding the strip to the cutter.

6. A machine for affixing sections of a strip of transparent, materialto portions of blanks, said machine having a cutter for the strip, rollsto advance the strip toward the cutter, and a spring for actuating therolls in strip-feeding direction.

7. A machine for aflixing sections of a strip of transparent material tothe apertured portions of blanks, said machine having means for feedingthe blanks successively, means for applying glueto pre-determined areasof each blank, means for completely cutting the strip into sections,means for holding each section temporarily after it is j cut, and meansfor superimposing the sections and blanks 8. A machine for aflixingsections of a strip of transparent material to the ape'rtured portionsof blanks, said machine having means for feeding the blankssuccessively, means for applying glue to pre-determined areas of eachblank, means for completely cutting individual sections from a strip,means for temporarily holding each section after it is cut, and meansfor causing each section to travel to position to be adhesively affixedto a blank.

9. A machine for aflixing sections of strip material to blanks, saidmachine having means for causing blanks to travel, a serrated cutterforsevering strip material into sections of predetermined length, andmeans in position to engage the rear-end portion of each severed sectionand hold it stationary during such severing, and means for registeringthe severed section with a traveling blank.

10. A machine for affixing sections of strip material to blanks, saidmachine having means engaging portions of blanks to cause them totravel, a serrated cutter for severing strip material into sections ofpredetermined length, means for combining each strip section with ablank, and friction means for ensuring registration of each severedsection with a blank.

11. A machine for applying transparent strip material to blanks havingapertures, said machine having means for feeding the blanks, and having"means for feeding the strip and a serrated cutter for severing it 1ntosections, means for temporarily holding the rear-end portion of eachsevered section, and means for efiecting a junction of the forward endof each section with a blank while the lat- A ter is in motion.

rolls for causing the strip to travel, means coacting with said rolls tohold the fed strip for causing blanks to travel, strip-feeding rolls andstrip-clamping members relatively ositioned to hold a portion of thestrip from eing shifted while being severed, and stripsevering meanslocated between said feeding rolls and clamping members.

16. A machine for combining sections of a strip with blanks, saidmachine having means for causing blanks to travel, stripfeeding rollsand strip-clamping members relatively positioned to hold a portion ofthe strip from being shifted while being severed, and strip-severingmeans located between said feeding rolls and clamping members, the saidclamping members being operable in time to release each severedstrip-section and permit its registration with a blank.

means for causing blanks to travel, feedrolls 17. machine for combiningsections of a strip with blanks, said machine comprising for causing thestrip to travel, clamping members coacting with said rolls to hold aportion of the strip taut, a knife in'position to act on the stripbetween said rolls and clamping members, means for actuating theclamping members to release each completely severed section of thestrip, and means for combining each section with a blank.

18. A machine for combining sections of a strip with blanks, saidmachine comprising means for causing blanks to travel, feed rolls forcausing the strip to travel, clamping members coacting with said rollsto hold a portion of the strip taut, a serrated knife in position to acton the strip between said rolls and clamplng members, means foractuating the clamping members to release each completely severedsection, and means for combining each section with. a blank.

In testimony whereof I have afiixed my signature.

HAROLD. J. GOSS.

taut, and serrated strip-severing means located between the feed rollsand the said stripholding means.

13. A machine for combining sections of strip material with blanks, saidmachine having means for causing blanks to travel, feed rolls forcausing the strip to travel, means coacting with said rolls to hold thefed strip taut, and an irregular-edged cutter in position to sever thestrip while the latter is taut.

14. A machine for combining sections of a strip with blanks, saidmachine having means for causing blanks to travel, rolls for feeding thestrip, clamping members coacting with said rolls to maintain the stripin stationary condition, and an irregular-edged cutter in position toact on the portion of the strip that is maintained stationary.

15.. A machine for combining sections of a strip with blanks, saidmachine having means

